Home / 859,629.70-1,289,455.35-260,596.90

Finding the Fourth Proportional to 859,629.70, 1,289,455.35 and 260,596.90

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Solution

The fourth proportional to 859,629.70, 1,289,455.35 and 260,596.90 is: 390,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,629.70 : 1,289,455.35 = 260,596.90 : x
  2. Step 2: Convert to fraction form
    859,629.70/1,289,455.35 = 260,596.90/x
  3. Step 3: Cross multiply
    859,629.70x = 1,289,455.35 × 260,596.90
  4. Step 4: Simplify right side
    859,629.70x = 336,028,066,898.42
  5. Step 5: Solve for x
    x = 336,028,066,898.42/859,629.70
  6. Step 6: Final answer
    x = 390,898.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.